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1. 发明授权

US06279521B1 Two-cycle engine 有权
标题翻译：双循环发动机
公开(公告)号：US06279521B1
公开(公告)日：2001-08-28
申请号：US09459021
申请日：1999-12-10
申请人： Shigetoshi Ishida , Naoki Tsuruoka , Yasuhiro Sensui
发明人： Shigetoshi Ishida , Naoki Tsuruoka , Yasuhiro Sensui
IPC分类号： F02B3300
CPC分类号： F02B25/14
摘要： A two-cycle engine includes scavenging passages on the cylinder side and the crankcase side as the passages to supply scavenging gas into the cylinder. The passage on the cylinder side includes a passage inside the cylinder sidewall having substantially the same inner diameter as that of the opening area of the scavenging charge port, while the passage on the crankcase side includes a space between the inner peripheral surface at the top end of the crankcase and the outer peripheral surface of the piston, and a connection means provided between the top end of the space and the lower end of the scavenger passage of the cylinder. As the fuel mixture in the crank chamber flows into the scavenging passage on the cylinder side through the narrow space of the passage on the crankcase side and the connection means, the rapid inflow of the fuel mixture into the cylinder is restrained and the supply of the fuel mixture is sustained constantly high until the latter half of the scavenging time. This enables an optimum supply of fuel mixture, and radically decreases the amount of unburned gas in the fuel mixture that is emitted with the exhaust gas.
摘要翻译：双冲程发动机包括在气缸侧和曲轴箱侧的扫气通道作为将清扫气体供入气缸的通道。气缸侧的通道包括在气缸侧壁内部具有与清扫装料口的开口面积大致相同的内径的通道，而曲轴箱侧的通道包括在顶端的内周面之间的空间和连接装置，其设置在所述空间的顶端与所述气缸的所述清扫通道的下端之间。由于曲轴室中的燃料混合物通过曲轴箱侧的通道的狭窄空间和连接装置流入气缸侧的扫气通道，所以抑制了燃料混合物进入气缸的快速流入，燃料混合物持续不断高达到后半部分的清除时间。这使得能够最佳地供应燃料混合物，并且从根本上减少与废气一起排出的燃料混合物中的未燃烧气体的量。

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